Rob Miller wrote:
maybe i'm missing something fundamental, but i'm having trouble figuring
out how i'm supposed to apply extension profiles to my site. the
intended mechanism is clear enough; set the active configuration to be
the desired profile and then execute runAllImportSteps on the setup
tool. the apparent fuzziness of the boundary between the base profile
and the extension profiles seem to be getting in my way, however.
my base profile is a default Plone site, which does a bunch of
configuration and adds a few pieces of content using the "structure"
folder mechanism that is supported by CMFCore's
StructureFolderWalkingAdapter. this works w/o problem. then i specify
an extension profile to be the active configuration and again
runAllImportSteps. the content is purged by default, which seems odd,
and it is not recreated b/c the StructureFolderWalkingAdapter is now
looking for a 'structure' folder in the extension profile, which is the
This is a known issue, as Jens already mentioned.
i see three possible ways around this, which i'll list in order from my
least to most preferred:
- we could have extension profiles not purge any content by default. it
seems strange that they do. perhaps this is supposed to be the case
already, and either it's just not happening or there's something i've
missed within my setup that is causing it to not be the case.
That's the current policy. Setup handlers have to make sure they don't
purge anything if no related setup files are in the current profile.
- allow extension profiles to specify which of the base profile's import
steps they depend on, so that only these can be run, instead of the
current situation where, AFAICT, you have to either run them all or
manually examine the profile and select the steps to run
- draw a more clear distinction between the base profile and the
extension profiles. instead of having the extension profiles
piggy-backing on the base profile, extension profiles would explicitly
define all of their own import steps, so that they can be applied
cleanly on top of existing sites w/o becoming quite so muddled w/ the
default configuration. this would also make it easier to implement an
uninstall process that would remove the extension profile from the site.
These solutions will create new problems regarding the procedure for
exports and re-imports.
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